Castro Valley Weather in January

Castro Valley in January sees moderate temperatures, with highs around 15°C (59°F) and overnight lows of 5°C (41°F). Rainfall is fairly high at around 75 mm (3 in) on average, so pack waterproofs just in case.

Rainfall in Castro Valley in January

You can expect rain on around 11 days based on historical patterns, with 75 mm (3 in) average for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Castro Valley in January

In January, Castro Valley sees moderate temperatures, with highs of 15°C (59°F). Nights drop to around 5°C (41°F). During January, the winter season is in full swing. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to 5°C (41°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Castro Valley in January

The month experiences a moderate amount of sunlight, with 186 hours of sunshine. This provides a nice balance between sunshine and clouds.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August, September and October typically offer the best weather for Castro Valley.